Annual report pursuant to Section 13 and 15(d)

Income Taxes (Impact of Tax Cuts and Jobs Act of 2017) (Details)

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Income Taxes (Impact of Tax Cuts and Jobs Act of 2017) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]    
Remeasurement of net deferred income tax and uncertain tax liabilities $ (2) $ (87)
One-time deemed repatriation tax on undistributed historical earnings of foreign subsidiaries (2) 2
Total provision for (benefit from) income taxes impact $ (4) $ (85)